20" LCD Color Monitor Dell SP2009Wc1ServiceServiceServiceHorizontal Frequency30 kHz to 83 kHzTable Of ContentsDescription Page Description PageSAFETY NOTICEANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THECHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICINGELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.6.Mechanical Instruction………………..…..….......297.Schematic Diagram………..................................….....357.1Main Board......………......................................357.2 Power Board……..…….……....................................417.3 USB Board……………………………………………..437.4 Key Board………………………...…………………….448.PCB Layout..……...………….......................................458.1.Main Board……………..…........................................458.2.Power Board……………........................................478.3.USB Board………………….....................................489.Maintainability………….......................................499.1.Equipments and Tools Requirement..…….…...........499.2.Trouble Shooting………………….............................5010.White-Balance, Luminance adjustment...………......5611.ISP Instruction…………….…….................................5812.Monitor Exploded View…………….…………............6213.BOM List………….....................................................6414.Different Parts List…………………….……………...85CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICINGTable Of Contents.......…….................……...........…........1Revision List.….........................………................……......2ECN History.….......................………..................……......3Important Safety Notice.….……….…..................……......41.Monitor Specifications.....…........................………........52.LCD Monitor Description…………………………….......63.Operation Instructions……………...............……...........73.1.General Instructions…………………………………….73.2.Control Buttons……………...............……...............83.3 Adjusting the Picture...........…………….........………..94.Input/Output Specification.............……………........…204.1.Input Signal Connector............………….................204.2.Factory Preset Display Modes...…..…......................214.3.Power Supply Requirements..........……...................214.4.Panel Specification…….....……………..................224.5.Definition of Pixel Defects…………...............……….235.Block Diagram…….…...................…………................255.1.Software Flow Chart………..………………....….......255.2.Electrical Block Diagram………………..…..….......27